There are no brand markings on the outside of the case. Opened the case to see the hard drive is a Quantum ProDrive LPS 525S. We have no way to test it, it is being sold AS IS, NO RETURNS will be accepted on this item. Believed to be Apple/Macintosh compatible.*Item is sold AS-IS, no returns are accepted.Seller is not responsible for any damages. All items are shipped with insurance coverage, any shipping damage must be claimed through the shipping carrier and all original packaging materials must be reserved and presented for inspection if required by the carrier.*